Fine‐structure superplasticity in materials

Abstract

Superplastic forming is a viable net‐shape forming technology. It is an attractive manufacturing technique because it bypasses machining, joining and riveting, and reduces material waste. This paper reviews the history and progress in the field of superplasticity. Fundamental understandings, such as microstructural prerequisites and deformation mechanisms, and technological applications for superplasticity are discussed. A wide range of structural materials, including metals, intermetallics, and ceramics are presented. Some of the most recent advances, for example, high strain rate superplasticity, low temperature superplasticity, and the development of ultrafine‐grained materials for superplasticity are also described.

Key Words:

• microstructure
• grain size
• grain boundary sliding
• forming
• strain rate

Notes

Invited paper

Correspondence addressee